Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Reconciliation of Income Tax Expense (Benefit)) (Details)

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Income Taxes (Reconciliation of Income Tax Expense (Benefit)) (Details) - USD ($)
3 Months Ended 6 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2022
Mar. 31, 2021
Income Taxes [Abstract]        
Income tax (benefit) expense at U.S. federal statutory rates $ (2,983,109) $ (593,101) $ (4,298,833) $ 3,041,159
State income tax (benefit) expense, net of federal (benefit) expense (230,978) (45,923) (332,853) 235,473
Non-deductible expenses 102,733   359,929  
Effect of stock options exercised   11,279 (23,350) (53,011)
Effect of common stock purchase warrants exercised       (2,038,919)
Effect of Paycheck Protection Program funds   (26,340)   (122,226)
U.S. research and development tax credit (913,000)   (2,876,430)  
Effect of foreign income tax rates (9,677) 4,993 (39,438) (27,577)
Effect of global intangible low taxed income (75,278) (55,388) 12,989 69,757
Change in valuation allowance 4,043,065 727,034 7,132,661 (1,005,752)
Other, net 38,794 (864) 152,530 1,088
Income tax (benefit) expense $ (27,450) $ 21,690 $ 87,205 $ 99,992
Tax Rate, Income tax expense (benefit) at U.S. federal statutory rates     21.00%